At long last, I have posted a first-cut at a Racal RA6790 driver in the beta update. Please make sure that you run the Activity Log before the first attempt to connect. Since I have never seen any dataflow from the Racal, it may take a few tres to get it going. Here are some notes you should read before trying the driver: Serial Port Settings 19200 8 N 1 Flow Control not Enabled Receiver Addressing Options for Address 0, 1, 37 Filters (1) Assumes there are 7 filters installed, and attempts to load them when first run, and stores values in the \user file. (2) When in ISB or SSB mode, ability to change filters is removed. Modes (1) Assumes ISB is present (2) CW mode is fixed BFO. CWV mode is Variable BFO. AGC and Manual Attenuation (1) Ability to change manual gain / attenuation in the following AGC Modes: Off, Slow T, Med T, Fast T (where T indicates you can set the gain Threshold) BFO (1) Ability to change BFO only in CWV mode. AutoMode (1) When enabled, the Step Size, Filter, Gain and BFO follow the mode setting change. Meter (1) Am guessing that the "R3" command requests meter information. I cannot find anything else in the manual. (2) If (1) works, a value is returned between 0..150 (none..highest). This will deflect the meter, but I have not yet calibrated, so results may be off. Locked ====== (1) If you change to LOCAL from the receiver front panel, Ergo should follow along, and then relock when you go back to REMOTE option on the rx front panel. 73 John Fallows, VE6MBA Creative Express Corporation http://swldx.com -- Binary/unsupported file stripped by Ecartis -- -- Type: application/ms-tnef -- File: winmail.dat